[R-390] Collins 390A

[Craig]

Russ,

The issues which I've had with low sensitivity in the RF cans was because of
bad silver mica caps in the can. Symptoms were having to turn the inductor
adjustment almost all the way down in travel (for any peak at all); another
turn and it would of fell free from the rack. Running the receiver a week or
two after the attempt, sensitivity that it did have, went south (again). 

Shotgun the silver mica caps in that RF can. Don't forget a smidgen of
DeOxit on the pins of said RF can.

YMMV

Regards,
Craig 

-----Original Message-----
From: R-390 [mailto:r-390-bounces at mailman.qth.net] On Behalf Of
wb3fau55 at neo.rr.com
Sent: Wednesday, August 31, 2016 4:10 PM
To: r-390 at mailman.qth.net
Subject: [R-390] Collins 390A

On  to my next repair-  low sensitivity on band 2 [1 to 2 mc]  only one of 3
of the Rf cans will peak.  My question is-  problem in the cans or below the
chassis?  73sRuss.
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